Question

In a titration that initially contains carbonate and bicarbonate, the volume of titrant required to reach the first equivalence point is less than that required to titrate from the first equivalence point to the second. Explain Why?

Answer 1

mixture contains Carbonates and bicarbonata. Suppose mixture is titreted with Hole titrant) - HOL Ya, co + - Nanco + Nad ) NaHCO & Hol Nadl + H co [At First Equivalence point Naco gets converted to Harco of titrant required is lesser neutralize only Na coz. and Nack. because it The volume has to Nad At Second Equivalence point We have Nahco present already in mixture and it gets Converted to look Nanco is also produced I from first reaction above. "At and Equivalence point I Total No of moles of Nanco = No of moles of Nanco produced from rąco & No of moles of Nanco present in mixtor. + The volume of more as No of titrant moles at and equivalence point is of Nanco is more